Repair is the best treatment for defective restorations, most dentists in Norway argue. In a questionnaire study from NIOM and University of Oslo, up to 90 % of the respondents favoured repair rather than replacement of the restoration.

The term “resin-based dental materials” refers to dental materials containing polymers, like composites, adhesives, cements and denture base material. Usually, these polymers are formed by in situ polymerization of methacrylate monomers.